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6.
Load classes
6.1
Installation for pedestrian loading
When installing for pedestrian loading, vehicles of any kind must be prevented from driving over the
surface through structural measures or cordoning off. The permissable installation depths and max. earth
coverings are stated in Table 2
6.2
Green spaces above the EcoBloc Inspect system
If a grass is planted above an infiltration system, the system should be covered with a water-impermeable
geotextile or a layer of clay roughly 100 mm thick, otherwise the grassed area may dry out more quickly
than other areas.
6.3
Installation for vehicle loading
The minimum and maximum earth coverings differ depending on the various loading classes: car, lorry
12, heavy-duty lorry 30, 40 and 60.
The min. and max. earth coverings for the various loading classes. Deviating installation situations should
System covering (reuse excavated material and/or gravel) with a maximum weight of unit volume of
20kN/m³.
Suitable for
Class
Earth covering
(min.) [m]
Earth covering
(max.) [m]
* Angle of friction φ ≥ 30°
* *Angle of friction φ ≥ 35°
The installation depth depends on the loading classes and the angle of friction of the material used to
cover the EcoBloc Inspect system.
Table 3 - Maximum installation depths (bottom edge of block)
suitable for
Class
Installation
depth (max.)
[m],
φ = 20°
Installation
depth (max.)
[m],
φ = 30°
Installation
depth (max.)
[m],
φ = 40°
For more information about installing EcoBloc Inspect system under traffic areas up to HGV60, please
refer to chapters 9 and 10.
6. Load classes
Table 1 - Earth coverings
always be discussed with GRAF.
Table 2 - Earth coverings
pedestrian
car
loading
0,25
0,25
2,75
2,75
pedestrian
car
loading
3,00
3,00
4,25
4,25
5,00
5,00
lorry12
HGV30
0,50*
0,50*
2,75
2,50
lorry12
HGV30
3,00
2,75
4,25
3,75
5,00
5,00
/
HGV40
HGV60
0,50**
0,80**
2,25
2,00
HGV40
HGV60
2,50
2,25
3,75
3,25
5,00
5,00
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